5Đ3A [N1328112008 ] > 8 SUY RA N 1328112008 ≥ 9 1ĐSUY RA 13281120...

1, - DAP AN CASIO CAM GIANG ( 27-12-2008)
DAP AN CASIO CAM GIANG ( 27-12-2008)

1,5đ

3a [

n

1328112008 ] > 8 suy ra

n

1328112008 ≥ 9

1đ

Suy ra 1328112008 ≥ 9 n suy ra n = 9